What text editor are you using ?
To me , this looks like opening a file that was created with another program than your text editor.
This might as well be a file with cheat-codes for a game.

Cheers ... McBie

A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila.
The problem is not the problem. The problem is your attitude towards the problem. You understand ?